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<?php |
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namespace DNADesign\Elemental\Forms; |
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use SilverStripe\Forms\GridField\GridField; |
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use SilverStripe\Forms\CompositeField; |
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use SilverStripe\Forms\FieldGroup; |
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use SilverStripe\Forms\FieldList; |
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use SilverStripe\Forms\TabSet; |
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use SilverStripe\Forms\ReadonlyTransformation; |
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class ElementalAreaField extends GridField |
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{ |
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/** |
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* A getter method that seems redundant in that it is a function that returns a function, |
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* however the returned closure is used in an array map function to return a complete FieldList |
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* representing a read only view of the element passed in (to the closure). |
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* |
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* @return callable |
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*/ |
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protected function getReadOnlyBlockReducer() |
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{ |
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return function ($element) { |
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$parentName = 'Element' . $element->ID; |
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$elementFields = $element->getCMSFields(); |
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// Obtain highest impact fields for a summary (e.g. Title & Content) |
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foreach ($elementFields as $field) { |
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if (is_object($field) && $field instanceof TabSet) { |
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// Assign the fields of the first Tab in the TabSet - most regularly 'Root.Main' |
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$elementFields = $field->FieldList()->first()->FieldList(); |
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break; |
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} |
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} |
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// Set values (before names don't match anymore) |
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$elementFields->setValues($element->getQueriedDatabaseFields()); |
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// Ensure field names are unique between elements on parent form |
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$elementFields->recursiveWalk(function ($field) use ($parentName) { |
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$field->setName($parentName . '_' . $field->getName()); |
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}); |
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// Combine into an appropriately named group |
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$elementGroup = FieldGroup::create($elementFields); |
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$elementGroup->setName($parentName); |
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$elementGroup->addExtraClass('elemental-area__element--historic'); |
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// Also set the important data for the rendering Component |
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$elementGroup->setSchemaData([ |
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'data' => [ |
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'ElementID' => $element->ID, |
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'ElementType' => $element->getType(), |
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'ElementIcon' => $element->config()->icon, |
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'ElementTitle' => $element->Title, |
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// @todo: Change this to block history permalink when that functionality becomes available. |
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'ElementEditLink' => $element->CMSEditLink() |
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] |
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]); |
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return $elementGroup; |
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}; |
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} |
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/** |
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* Provides a readonly representation of the GridField (superclass) Uses a reducer |
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* {@see ElementalAreaField::getReadOnlyBlockReducer()} to fetch a read only representation of the listed class |
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* {@see GridField::getModelClass()} |
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* |
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* @return CompositeField |
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*/ |
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public function performReadonlyTransformation() |
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{ |
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$readOnlyField = $this->castedCopy(CompositeField::class); |
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$blockReducer = $this->getReadOnlyBlockReducer(); |
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$readOnlyField->setChildren( |
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FieldList::create( |
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array_map($blockReducer, $this->getList()->toArray()) |
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) |
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); |
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$readOnlyField = $readOnlyField->transform(new ReadonlyTransformation()); |
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$readOnlyField->setReadOnly(true); |
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$readOnlyField->setName($this->getName()); |
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$readOnlyField->addExtraClass('elemental-area--read-only'); |
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return $readOnlyField; |
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} |
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} |
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dnadesign /
silverstripe-elemental
